Describe two types of radioactive decay that are relevant to dating earth materials?

The diagram below shows the layers of a rock having a trilobite: a rock column labeled rock is shown. the column has three layers. the bottommost layer of the rock has one shaded rhomboid shape, the middle layer has a rhombus with a diagonal along with two identical organisms marked as, trilobite, in the key, the top layer has two semicircles. a key is shown on the right side of the diagram. the shaded rhombus is marked as a, the rhombus with the diagonal is marked as b, the semicircle is marked as c which statement about the rock fossils is true?

Which star has the highest apparent magnitude?

Name another animal that can be grouped in group s and t(i)group (i)group group s is sharp thorns (except puffer fish and porcupine)group t is poisonous sting (except snake and scorpion )*can u me with this question* pl